Vertical lift jack



July 17, 1934.

E. c. BERGH 1,966,749 VERTICAL LIFT JACK Filed My 18, 1932 3 Sheets-Sheet 1 Inventor 12 .6 Befyfi flitomey July 17, 1934. E. c. BERGH VERTICAL LIFT JACK Filed May 18, 1932 5 Sheets-Sheet 2 Inventor flitorney VERTICAL LIFT JACK Filed May 18, 1932 5 Sheets-Sheet 5 Inventor Z.6.Bery/2 Patented July 17, 1934:

VERTICAL LIFT JACK" Edmund. C. Bergh, Hendrum, ,Minns.

Application-May 18, 1932, Serial No. 612,114

3 Claims.

The present invention relates to a machine designed for a vertical lift pump jack but may be used for other purposes where straight pull is desired and the objects of the invention are .to provide a machine of this nature which is simple in its construction, inexpensive to manufacture, strong and durable, thoroughly efficient and reliable in use and operation, and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention consists in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more on the line 5 5 of Figure 1.

Referring to the drawings in detail it will be seen that the letter 1? denotes a frame comprising a pair of uprights 5 and 6 and a cross bar '7 at the upper ends thereof. Suitable braces 9 are connected to the lower portions of the uprights.

The upright 6 is provided with a longitudinally extending slot 10. A shaft 11 is journalled in the upri ts 5 and 6 above the upper end of V the slot while a shaft 12 is journalled in the uprights 5 and 6 below the slot 16. A hand crank 14 is provided on one end of the shaft 12 to rotate the same and a fly wheel 15 may be mounted on this shaft.

A pin 16 is slidable in the slot 10 and has rockable thereon a cross head 18. A crank 19 on the shaft 12 is pivotally engaged with one end of the cross head while a crank 20 on the shaf 11 is pivotally connected with the other end of the crosshead 1S. Numeral 21 denotes the rod to be reciprocated and it is pivotally connected on the end of the pin 16.

It will be seen that when the crank 14 is turned from the position shown in Figure 1, the crank 19 moves the lower arm of the cross head to one side and upwardly. The cross-head rocks on the pin 16 during this movement and swings the crank 20 and rotates the shaft 11 in an opposite direction to the shaft 12. During these movements, the pin 16 reciprocates up and down in the slot 26, and the pump rod or the like 21 being connected to the pin 16, reciprocatory mo tion is imparted thereto.

It is thought that the construction, operation, utility and advantages of this invention will now be clearly understood without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

1. In a hand apparatus for reciprocating a pump rod or the like in a straight line, said apparatus comprising a frame comprising a spaced pair of uprights, a pair of vertically spaced shafts rotatably supported on and between the uprights, a slide guide on the upright adjacent the pump rod, a slide vertically reciprccable in the guide, a pin carried by the slide, a rocker pivotally mounted intermediate its ends on the pin, a connection on the pin for pivotally connecting the pump rod to the pin, a crank on each shaft, said cranks having their free ends pivotally connected to opposite ends of the rocker, the shafts being arranged to rotate in opposite directions and the cranks being arranged to project in the same direction when they are vertically aligned, a fly-- wheel carried by the lower shaft int-err ediat-e the uprights, and hand crank power connection means on the lower shaft.

2. In a device of the character described, a frame consisting of a pair of spaced uprights, an upper shaft journaled in openings in the upper part of said uprights and extending beyond one of said uprights, a lower shaft journaled in openings in the lower part of said uprights and extending beyond said one and beyond the remaining upright, means on the end of said lower shaft outward of said remaining upright for applying rotative force to said lower shaft, a flywheel fixed on said lower shaft between said uprights, said one of the uprights being provided with a guide slot extending between and close to both of said shafts, a crank fixed to that end of each of said shafts which is outward of said one upright, a

slide having a portion slidable in said guide slot, a cross head pivoted at its center on said slide outward of said cranks and having its opposite ends pivoted to the outer ends of said cranks, and means on said slide outward of said cross head for connecting thereto an object to be vertically reciprocated in a straight line.

3. In a device of the character described, a frame consisting of a pair of spaced uprights, an upper shaft journaled in openings in the upper part of said uprights and extending beyond one of said uprights, a lower shaft journaled in openings in the lower part of said uprights and extending beyond said one and beyond the remaining upright, means on the end of said lower shaft outward of said remaining upright for applying rotative force to said lower shaft, a flywheel fixed on said lower shaft between said uprights, said one of the uprights being provided with a guide slot extending between and close to both of said shafts, a crank fixed to that end of each of said shafts which is outward of said one upright, a slide having a portion slidable in said guide slot, a cross head pivoted at its center on said slide outward of said cranks and having its opposite ends pivoted to the outer ends of said cranks, and means on said slide outward of said cross head for connecting thereto an object to be vertically reciprocated in a straight line, said portion of the slide comprising a reduced shank passing through and slidably engaging the opposite sides of said slot and having a threaded terminal, and a nut on said terminal, said nut and a shoulder defined at the opposite end of said shank slidably engaging opposite sides of said one upright.

EDMUND C. BERGH. 

